Search results
Results from the WOW.Com Content Network
In condensed matter physics, scintillation (/ ˈ s ɪ n t ɪ l eɪ ʃ ən / SIN-til-ay-shun) is the physical process where a material, called a scintillator, emits ultraviolet or visible light under excitation from high energy photons (X-rays or gamma rays) or energetic particles (such as electrons, alpha particles, neutrons, or ions).
CsI(Tl) is only slightly hygroscopic and does not usually require an airtight enclosure. GaAs or gallium arsenide (suitably doped with silicon and boron impurities) is a cryogenic n-type semiconductor scintillator with a low cryogenic bandgap (1.52 eV) and high light output (100 photons/keV) in the infra-red (930 nm). The absence of thermally ...
Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...
The use of found objects in modern classical music is often connected to experiments in indeterminacy and aleatoric music by such composers as John Cage and Karlheinz Stockhausen. However, it has reached its ascendancy in those areas of popular music as well, such as the ambient works of Brian Eno. In Eno's influential work, found objects are ...
In music, the dynamics of a piece are the variation in loudness between notes or phrases.Dynamics are indicated by specific musical notation, often in some detail.However, dynamics markings require interpretation by the performer depending on the musical context: a specific marking may correspond to a different volume between pieces or even sections of one piece.
For example, when a semitone relationship is indicated between F and G, either by placing a mi-sign (♮) on F or a fa-sign (♭) on G, only the context can determine whether this means, in modern terms, F ♯-G or F-G ♭, or even F ♭ –G. The use of either the mi-sign on F or the fa-sign on G means only that "some kind of F goes to some ...
Musical technique may also be distinguished from music theory, in that performance is a practical matter, but study of music theory is often used to understand better and to improve techniques. Techniques such as intonation or timbre , articulation , and musical phrasing are nearly universal to all instruments.
Video of the Museum of Science (Boston)'s coil. The singing Tesla coil, sometimes called a zeusaphone, thoramin or musical lightning, is a form of plasma speaker.It is a variety of a solid state Tesla coil that has been modified to produce musical tones by modulating its spark output.